QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2013

QUARTERLY FINANCIAL DATA (UNAUDITED)

Schedule of Quarterly Financial Data (Unaudited)

2013	First			Second		Third		Fourth
Operating revenue	$	111,444		$	154,555	$	184,404	$	133,700
Net operating income		5,770			20,783		35,804		11,648
Net income (loss)		(1,073	)		13,510		29,151		5,666
Diluted earnings (loss) per share		(0.03	)		0.28		0.61		0.12
Common stock market price range:
High		21.22			20.84		22.34		23.43
Low		18.42			18.54		18.87		19.65
Dividends paid per common share		0.1600			0.1600		0.1600		0.1600

2012	First		Second		Third		Fourth
Operating revenue	$	116,749	$	143,552	$	178,135	$	121,530
Net operating income		6,607		19,622		36,361		11,253
Net income		1,085		12,965		29,772		5,006
Diluted earnings per share		0.03		0.31		0.71		0.12
Common stock market price range:
High		19.25		18.60		19.05		18.90
Low		17.67		17.14		17.93		16.84
Dividends paid per common share		0.1575		0.1575		0.1575		0.1575